Reason: Ming Yingzong's younger brother Zhu Qiyu supervised the country. Yu Qian focuses on the overall situation and puts the overall situation first. He strongly recommended him to be emperor, so Zhu Qiyu became emperor, which aroused Ming Yingzong's antipathy. Finally, Ming Yingzong reset and beheaded him.
Zhu Qiyu, Ming Daizong, was seriously ill in his later years. His subordinates, Shi Heng and Xu Youzhen, thought that it was more important to welcome Ming Yingzong's restoration than to support the new king's succession, so they plotted to launch a coup to make Ming Yingzong proclaimed himself emperor again. Ming Yingzong regained power, and as soon as he came to power, he made an excuse to kill Yu Qian, thus killing a loyal and patriotic person.
Extended data:
When Yu Qian's private house was searched, nothing of value and evidence of rebellion were found. Yu Qian's living room is just sheltered from the wind and rain, the walls are bare, and the first door is locked. There are only embroidered robes and swords given by Ming Daizong, and there is no extra property.
After Ming Yingzong knew it, he also regretted killing such a sage on impulse, but what made him regret even more was that Mongolian cavalry invaded the border again soon, and no one like Yu Qian was able to resist foreign enemies.
In the second year of Chenghua (1466), Ming Xianzong rehabilitated Yu Qian and changed his former residence to "Zhongjie Temple". 1984, the Beijing municipal government announced "Zhongjie Temple" as a municipal cultural relics protection unit.
References:
Baidu encyclopedia-Yu Qian